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《地震学报(英文版)》 2010-01
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2.5D scattering of incident plane SH waves by a canyon in layered half-space

Zhenning Ba and Jianwen Liang Department of Civil Engineering, Tianjin University, Tianjin 300072, China  
This paper presents 2.5D scattering of incident plane SH waves by a canyon in layered half-space by the indirect boundary element method (IBEM). The free field response is carried out to give the displacements and stresses on the line which forms boundary of the canyon. The fictitious uniform moving loads are applied to the same line to calculate the Green’s functions for the displacements and stresses. The amplitudes of the loads are determined by the boundary conditions. The displacements due to the free field and from the fictitious uniform moving loads have to be added to obtain the whole motion. The numerical results are carried out for the cases of a canyon in homogenous and in one layer over bedrock. The results show that the 2.5D wave scattering problem is essentially different from the 2D case, and there exist distinct differences between the wave amplification by a canyon in layered half-space and that in homogeneous half-space. The reasons for the distinct difference are explored, and the effects of the thickness and stiffness of the layer on the amplification are discussed.
【Fund】: supported by National Natural Science Foundation of China (Nos. 50908156 and 50978183)
【CateGory Index】: P315.31
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【Citations】
Chinese Journal Full-text Database 2 Hits
1 Liang Jianwen Yan Linjun (Department of Civil Engineering, Tianjin University, Tianjin, 300072) Vincent W Lee (Department of Civil Engineering, University of Southern California, Los Angeles, CA 90089);SCATTERING OF INCIDENT PLANE P WAVES BY A CIRCULAR-ARC CANYON WITH A COVERING LAYER[J];Acta Mechanica Solida Sinica;2002-04
2 LIANG Jianwen,BA Zhenning(Tianjin University,Tianjin 300072,China);Exact dynamic stiffness matrices of 3-D layered site and its Green's functions[J];Journal of Earthquake Engineering and Engineering Vibration;2007-05
【Co-citations】
Chinese Journal Full-text Database 7 Hits
1 YUAN Xiaoming(Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China);Auxiliary functions method for solving mixed-boundary vibration problems[J];Journal of Earthquake Engineering and Engineering Vibration;2007-06
2 HUANG Ru-hui~1,ZHANG Qiu-hong~2 1.Institute of Earthquake Engineering,China Academy of Building Research,Beijing 100013,China;2.Institute of Shenzhen Jianxue Architectural Design,Guangdong Shenzhen 518045,China;ADVANCEMENTS ABOUT THE SCATTERING WHEN THE SEISMIC WAVES INCIDENTS[J];Low Temperature Architecture Technology;2006-01
3 Zhao Chenggang Wang Lei Gao Fuping (School of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing 100044, China) (Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China);SCATTERING OF PLANE RAYLEIGH WAVES BY A CIRCULAR-ARC ALLUVIAL VALLEY: AN ANALYTICAL SOLUTION[J];Chinese Journal of Theoretical and Applied Mechanics;2007-03
4 WANG Lei1,2,ZHAO Cheng-gang1(1.School of Civil Engineering and Architecture,Beijing Jiaotong University,Beijing 100044,China;2.The First Survey and Design Institute of China Railways,Xi'an 710043,China);Scattering of plane Rayleigh waves in alluvial valleys with saturated soil deposits[J];Chinese Journal of Geotechnical Engineering;2007-02
5 LIANG Jian-wen1, JI Xiao-dong1, Vincent W Lee2 (1. Tianjin University, Tianjin 300072, China; 2. University of Southern California, CA 90089, USA);Effects of an underground lined tunnel on ground motion(I): series solution[J];Rock and Soil Mechanics;2005-04
6 LIANG Jian-wen1, JI Xiao-dong1, Vincent W Lee2 (1. Tianjin University, Tianjin 300072, China; 2. University of Southern California, CA 90089, USA);Effects of an underground lined tunnel on ground motion (II): numerical results[J];Rock and Soil Mechanics;2005-05
7 YANG Cai-hong,LIANG Jian-wen,ZHANG Yu-shan(Department of Civil Engineering,Tianjin University,Tianjin 300072,China);Analytical solution of scattering of plane SH waves around a canyon with multi-layered alluvia[J];Rock and Soil Mechanics;2006-12
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